@charset "UTF-8";
* {
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #000;
}

a {
  position: relative;
  width: 400px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 24px;
  color: #fff;
  background: linear-gradient(to right, #03a9f4, #f441a5, #ffea3b, #09a8f4);
  background-size: 400%;
  border-radius: 50px;
}
a::before {
  content: "";
  position: absolute;
  top: -5px;
  left: -5px;
  bottom: -5px;
  right: -5px;
  background: linear-gradient(to right, #03a9f4, #f441a5, #ffea3b, #09a8f4);
  background-size: 400%;
  border-radius: 50px;
  /* 位于按钮之下 */
  z-index: -1;
  filter: blur(20px);
}
a:hover {
  -webkit-animation: streamer 8s infinite;
          animation: streamer 8s infinite;
}
a:hover::before {
  -webkit-animation: streamer 8s infinite;
          animation: streamer 8s infinite;
}

@-webkit-keyframes streamer {
  100% {
    background-position: -400% 0;
  }
}

@keyframes streamer {
  100% {
    background-position: -400% 0;
  }
}/*# sourceMappingURL=index.css.map */